Assertion A- The deficiency symptoms of N - P and Mg are visible first in senescent leaves- Reason R- Elements like N- P and Mg are mobile-A- Both A and R are true and R explains AB- Both A and R are true and R does not explain AC- A is true and R is falseD- Both A and R are false

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Deficiency of Nutrients

Assertion A: ...

Question

Assertion (A): The deficiency symptoms of N, P and Mg are visible first in senescent leaves.
Reason (R): Elements like N, P and Mg are mobile.

Both A and R are true and R explains A

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Both A and R are true and R does not explain A

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A is true and R is false

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Both A and R are false

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Solution

The correct option is A
Both A and R are true and R explains A

Elements like N, P and Mg are actively mobilised to young developing tissues from older tissues under deficiency. Hence deficiency symptoms appear first in old senescing leaves.

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Assertion (A): The deficiency symptoms of N, P and Mg are visible first in senescent leaves. Reason (R): Elements like N, P and Mg are mobile.

The correct option is A Both A and R are true and R explains A Elements like N, P and Mg are actively mobilised to young developing tissues from older tissues under deficiency. Hence deficiency symptoms appear first in old senescing leaves.

Assertion (A): The deficiency symptoms of N, P and Mg are visible first in senescent leaves.
Reason (R): Elements like N, P and Mg are mobile.

The correct option is A
Both A and R are true and R explains A

Elements like N, P and Mg are actively mobilised to young developing tissues from older tissues under deficiency. Hence deficiency symptoms appear first in old senescing leaves.